Shutter-worker



P. K. OLA-LLY. Shutter Worker.

Patented Aug 31,1880.

Invent 0r 9. 4 W- Zhtnessea.

UNITE ra'rns PATENT SHUTTER-WORKER.

SPECIFICATION forming part of Letters Patent No. 231,677, dated August31, 1880. Application filed J auuary 17, 1880.

To all whom it may concern Be it known that I, PATRICK K. OLALLY, ofBoston, in the county of Suffolk and State of Massachusetts, haveinvented certain Improvements in Means for Operating and FasteningBlinds and Shutters, (Case B,)of which the following is a specification.

This invention has for its object to provide improved means foroperating an outside blind or shutter and fastening the same in anydesired position from the inside of the window.

To this end my invention consists in the improved means which I will nowproceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a horizontal section of a portion of a window casingand blind. Fig. 2 represents a section on line 00 a, Fig. 1. Figs. 3 and4 represent enlarged sections on line 3 y, Fig. 1, showing the bolt indifferent positions. Fig. 5 represents a section of one of the partsdetached, and Fig. 6 represents a front View of another part detached.

' Similarletters of referenceindioatelike parts in all the figures.

In the drawings, A represents a window-casin g, and B represents anordinary blind hinged to the casing in the usual manner. One of thehinges O of the blind is provided with a pinion, D, which is rigidlyattached to the portion of the hinge that is attached to the blind.

E represents a rack formed on a rod, E, which is suitably secured to abolt, F, in such manner that said bolt can be rotated without disturbingits connection with the rod E.

G represents a socket or bushing secured to the casing. I Said sockethas a screw-threaded orifice adapted to receive the bolt F, and thescrew-threads are cut away to form channels or enlargements g g,extending through the socket and having two threaded portions, 9 g.

The bolt F is screw-threaded on its periphery, and the threaded portionis partially cut away at f f, lengthwise of the bolt, which cutawayportions are separated by threaded portions f f, the cut-away portionsbeing of such width that they will receive the screwthreaded portions gg of the socket and permit the threaded portions f f to fit in thecut-away enlargements g g of the socket, as shown in Fig. 3. When thebolt is in this position it is adapted to be moved freely through thesocket and cause the rack E to turn the blind on its hinges.

When the bolt is partially turned from the position shown in Fig. 3 itsthreaded portions f engage with the threaded portions 9 of the socket,as shown in Fig. 4, so that the bolt is locked and prevented from movinglengthwise.

It will be seen that the blind can be fastened by the described means inany desired position, whether open or shut, and as said bolt isaccessible only from the inside of the window, it follows that the blindcannot be moved from the outside without breaking the hinge or thewindow.

The rod E is preferably threaded on its inner end and screwed into atapped socket in the bolt, the threads of the rod and socket having aquicker pitch than the threads ofthe bolt F and socket G, so that incase the blind is either opened or closed, so that the bolt cannot bemoved lengthwise in one direction or the other, and the bolt F is insuch position that its threads do not register with the threads of thesocket, the bolt may be moved suffioiently to enable its threads toregister with the threads of the socket by slightly rotatin g the bolt,such rotation causing the threads of the rod E and its socket to givethe bolt F a slight longitudinal movement sufficicnt to accomplish thedesired result.

I prefer to provide the hinge with a lug, l, to bear against the rackand prevent the latter from being separated from thepiniou either bybeing pressed up, downward, or outward, as shown in Figs. 1 and 2.

I claim as my invention 1. As a means for operating and fastening ablind or shutter, a socket or bushing adapted to be secured to awindow-casing and'provided with internal screw-threads which arepartially cut away to form longitudinal channels or enlargements in thesocket, a bolt provided with screw threads formed to engage the threadsof the socket and partially cut away to correspond with the socket, asdescribed, and a rod secured to the end of the bolt and provided withrack-teeth adapted to mesh with rotated, substantially as and for thepurpose specified.

In testimony WhereofIhave signed myname to this specification, in thepresence of two I 5 subscribing Witnesses, this 13th day of J annpinionsor segments rigidly attached to the blind or shutter, as set forth.

2. The combination of thepartially-threaded rotary bolt F, itspartially-threaded socket G,

the rod E, having the rack E, and the pinion D, engaging the rack andpreventing thclonary, 1880.

gitudinal movement of the rod when the blind is opened or closed, therod having a threaded v PATRHJK 0 DAILY end and the bolt having athreaded socket to Witnesses:

O. F. BROWN,

engage the threaded end of the rod, whereby GEO. W. PIERCE.

the bolt is caused to move longitudinally when

